Researchers at the Center for Global Health Research in Toronto studied 113,752 women and 88,496 men between 25 and 79 years of age. They found that compared to people who never smoked, current smokers had a three times higher risk of dying from any cause and their life expectancy was 10 years shorter.
They also found that people who quit smoking between the ages of 25 and 34 gained back all 10 years of life expectancy they would have lost if they had
